Compressed-air rifle



July 6,1926.

M. GUlDOTE COMPRESSED AIR RIFLE Filed Nov. 28, 1925 3 Sheets-Sheet 1 lkfl LrlLa Maxim zzz'iazc ATI NEY July 6,1926. 1,591,756

M. GUIDOTE COMPRESSED AIR RIFLE Filed Nov. 28, 1925 3 Sheets-Shet 2ATTORNEY WITNESS W July 6 1926.

M. GUIDOTE COMPRESSED AIR RIFLE Filed NOV. 2 1925 3 Sheets-Sheet 5Fatentecl July 6, 1926.

PATENT OFFICE. I

MAXIMO GUIDOTE, F MANILA, PHILIPPINE ISLANDS.

COMPRESSED-AIR RIFLE.

Application filed November- 28, 1925. SeriaTNo. 72,011.

This invention contemplates the provision ofa rifle adapted to beoperated by compressed air, the invention residlng in the novelconstruction, combination and arrangement of parts hereinafter describedi and particularly pointed out in the appended claims. v

In the drawing forming part of this application, like numerals ofreference indi- 1 cate similar parts in the several views, and

wherein Figure 1 is a side elevation of the rifle constructed inaccordance with the present invention.

Figure 2 is a fragmentary View showing by dotted lines the activeposition of the reloading mechanism, and by full lines the position ofsaid mechanism after the rifle has been fired. 20 Figure 3 is anenlarged fragmentary View partly in section showing the position of the.compressed air chamber and valve with relation to the trigger.

Figure 4 is a longitudinal section through 55 the compressed air chamberand valve which controls communication between said air chamber and thebarrel of the rifle.

Figure 5 is an enlarged fragmentary view showing the position of thetrigger con- 0 trolled mechanism after the rifle has been fired. j t

Figure 6 is a sectional view on line 66 of Figure 5. U Figure 7 is aview similar to F1gure 5 5 showing the arrangement of the trlggercontrolled mechanism prior to the firing of the rifle.

Referring to the drawings in detail, 10 indicates the butt of the rifle,while the 0 barrel therefor is indicated at 11. Arranged adjacent thebarrel is a magazine chamber- 12 for the reception of the projectiles13, the latter being singly fed into the bore of the barrel 11 throughthe instrumentality 1 of a follower 14 actuated by a spring 15 arrangedin a compartment formed in the chamber 12, as clearly illustrated 1nFigure'7. The follower 14 is provided with a knob or handle 16 whichslides through a 1 slot 17, so that the follower can be easily andconveniently retracted against the tension of the spring 15, as theoccasion may require. Each projectile 18 is fired or pro- ;jected fromthe rlfle through the instrumentality of a plunger 19, the latter beingactuated by compressed air admitted to a tube in which the plunger 19 ismounted for sliding movement. This tube 20 communicates with a valvecasing 21 clearly shown in Figure 4, and in which casing is arranged avalve seat 22 normally engaged by a valve 23. This valve sliding rod 24about which is arranged a colled spring 25, one end of which bearsagainst the valve, while the other end bears is carried by a against theadjacent end of the compressed air chamber 26, and is utilized to holdthe valve normally seated. The valve casing is threaded into a chamber27 arranged directly beneath the tube 20 and communicating with thelatter, while the sliding rod 24 of this valve projects within thechamber 27 to be actuated by a trigger controlled mechanism in a mannerto be hereinafter described. As shown in Figure 4, the compressed airchamber 26 is arranged in end to end relation with the valve casing 21,and has an opening in one end thereof to receive the sliding rod 24 ofthe'valve structure. This same end of the compressed air chamber 26 isalso provided with openings 28 to allow the compressed air from thechamber 26 to enter the valve casing, and subsequently pass around the,valve into the tube 20, when, of course, the valve 23 is opened. Thecompressed air chamber 26 is equipped with a suitable valve 29, throughwhich compressed air is adapted to be pumped into the chamber 26, aswill be readily understood.

The trigger controlled mechanism above referred to includes a short rod30 mounted for sliding movement within the chamber 27 and normallybearing against the adja cent end of the sliding valve rod 24. This rod30 projects forwardly of the casing 27 and is adapted to be actuated bya cam 31 pivoted as at 32 and formed with a nose-like extremity 33 for apurpose to be presentlydescribed. A shaft 34 has mounted thereon atumbler 35, the latter being formed with spaced projections 36 and37,respectively, which projections cooperate with the noselikeextremity' 33 of the cam to assist in operating the latter. The tumbler35 is formed with a lug 38 which is connected by a link 39 with onebranch of a spring 40, the latter being of substantially U-shaped s13,while the other formation with the said branch s11 susceptible ofmovement with relation to the other branch, indicated at 1-2.

Cooperating with the lug 38 of the-tunibler 35 is a lever 43, forholding the tumbler in the position shown 111' Figure? rifle charge,while the lever -13 is maintained in this position against theinfluenceof a spring by means of a lever 1'5, one end of which contactsthe adjacent end of" the lever end of which bears against. the adjacentextremity it) of the trigger H. In this position of parts the spring-10is also under tension, so that when the trigger is operated'toett'ect' a release of the tumbler 85, the limb 11 of the spring -10functions tooperate the tumbler in the manner to-initially impartmovement to thecam 81'. his cam is forcibly operatedby means of a spring18 to slide the rod 3'.) against the rod 21 of" the valve, thereby veryquickly opening'the valve to allow a charge of compressed-air topassinto the chamber 2?. and thence into the tube 20 to operate theplunger 19.

Assuming that the parts are ar angel in the manner shown in Figure '4',wherein it willbe noted that one of the projectiles 1 is arrangeddirectly in advance or the plunger 19', it is only necessary to pull thetri er J in order to tire the rifle, orin other vords project theprojectile 1S therefrom. When the trigger 47 is pulledit pushes down onthe adjacent end of thelever which lever is pivoted at a-poi'nt betweenits ends. thereby rocking the lever in a direction to separate the leverfrom the tumbler it thismoment the spring it) expands, whereupon thelimb 11 0f said spring'quicl-zl'y and forcibly assumes the positionillustrated in Figure 5, thereby turning the tumbler in the direction ofthe cam 31-. As t'he't'uinl. ler is rotated inthis-direction, theprojection 36 contacts the nose-like extension 01" the cam- 31', therebyturning the cam together with the assistance 01 the spring l8 against.the rod 30, which rod in turn opens the valve 23 in the manner abovedescribed',-afnd allows a charge of compressed air to find its way intothe tube 20, operating the plunger 19. The position occupied' by thevarious parts of this mechanism, after the rifle has been fired, isclearly illustrated in Figure 5. It will be notedlin this figure that asthe branch 41 of the spring stO expands, it is brought into contact witha spring 'to cushion the movement of said branch 41', and at the sametime place the spring 50'under tension so that the latter will assist inreturning the mechanism to the position shown in Figure 7 incident tothe recharging of the rifle.

The recharging mechanism includes a hand grip 51 mounted for slidingmovement on a rod 52' and connected by means of a plate 53 with asliding arm 54:. This arm' 5 1 has one end connected with a link 55which in turn is connected with the shaft 311' upon-which is mounted thetumbler 35, so that when the recharging mechanism is operated, itfunctions to rotate the shaft 3-1 inan oppositedirection; During thisrotation of the shaft S the pointed projection 3'? of: the tumblerengages the nose-like extension 33 of the cam 31, and thereupon movesthe cam from the position shown in Figure 5 to the position illustratedin Figure' 7. Consequently, tlie'bianch' 11 01" the U-shaped'spring 1-0is also returned from the position shown in Figure 5 to-the' positionshown in Figure 7, and the lever 1 5 again arranged to engage the lug 38ot' the-tumbler to maintainthe'parts in-the position shown in Figure I.lVhile these parts are being arranged in the manner just; described, theplunger 19' is also being retracted intothe tube 20'to theposition whichit occupies in Figure 7, and this is accomplished by the means clearlysliown'in Figure 2. F or tl s purpose i employ a bell crank lever whichis pivoted as at 56, and which lever has its short branch 57 disposed tohe engaged by a member carried'b v' the plunger 1)when the rifle hasbeen fired. lVhen' the rille is charged the bell crank lever assumes theposition shown by dotted lines in Figure 2, and when the rifle is fired,the member carried by the plunger 19ei gages the short branch 51' ofsaid bell crank lever and moves it to the position shown by full. linesiuFig- 1116'2. The movement otthis lever in this direction is cushionedby a spring 59-carricd by the other branch 60' of said lever and adaptedto contact a stop-pin 61.. Also-carried by the shaft illupon which thetumbler 35 is mounted is a finger 62; which cooperates with the branch(30 of the bell crank lever to retract the plunger 19 while the rifle isbeing rechargedin'the'manner above described. hen the rifle istired-this linger 62 is moved to the position it occu ies in full linesin" Figure being limitecin its movement iii-this direction by astoppin'63. Now, when the recharging mechanism is operatedxthe'sha'tt 3 1 isturnecb in the'lnanner above described and during this rotation of theshaft 31- the'tinger G2 is brought into contact with'the adjacent branchtlO of' the bell cranlt lever, rocking the. latter upon its pivot 56,and shiftingsaid'lever'to the position" shown-by dotterf lines in Figure2, during which operation the plunger 19" is retracted't'rom theposition shown in Figure 5 to the position it occupies in Figure Y; Itwill be notcduponinspection of Figure'ii that the compressedair chamberand valve casing are referably arranged within the butt lO'of tie rifle.

lVhil e it is believed that from the fore going descriptionthe'nature'and advantages of the invention will be readily apparent, I

low

desire to have it understood that I do not limit myself to what isherein shown and described, Tand that such changes may be resorted towhen desired as fall within the scope of what is claimed.

Having thus described the invention, What is claimed as new, is

1. In a rifle of the character described, a barrel, a magazine, meansfor singly feeding projectiles from the magazine to said barrel, acompressed air receiving chamber, a tube establishing communicationbetween said chamber and barrel, a plunger operating in said tube, avalve controlling said communication and including a sliding rod, meansfor opening said valve and including a cam, a tumbler designed tooperate said cam, means for operating said tumbler, means including atrigger for normally holding said tumbler cocked, and means forreloading the rifle.

2. In a rifle of the character described, a barrel, a magazine, meansfor singly feeding projectiles from the magazine to said barrel,

a compressed air receiving chamber, a tube establishing communicationbetween the chamber and barrel, a valve controlling said communication,a plunger adapted to be actuated by compressed air and operable in saidtube and barrel, means for opening said valve including a cam, resilientmeans for forcibly operating said tumbler, trigger actuated means foreflecting a release of said resilient means, and means for reloading therifle.

3. In a rifle of the character described, a

barrel, a magazine, means for singly feeding projectiles from themagazine into the barrel, a compressed air receiving chamber, a tubeestablishing communication between said chamber and barrel, a plungerslidable in said tube and barrel, and adapted to be actuated bycompressed air, a valve controlling communication between the chamberand tube, means including a trigger for opening said valve, and meansfor resetting the trigger actuated means and retracting said plungerWithin the tube for the purpose specified.

4. In a rifle of the character described, a barrel, a magazine, meansfor single feeding projectiles from the magazine into said barrel, acompressed air receiving chamber, a tube establishing communicationbetween said chamber and barrel, a plunger mounted to slide within thetube and barrel, a valve controlling communication between the chamberand tube, trigger actuated mechanism for opening said valve, and meansfor resetting said trigger actuated mechanism and retracting the plungerto its inactive position, and including a bell crank lever, having onebranch disposed in the path of movement of said plunger, a membercarried by the plunger and adapted to engage said lever When the plungeris operated in one direction, and a movable finger adapted to engage theother branch of said lever and operate the latter to retract the plungeras described.

In testimony whereof I aflix my signature.

MAXIMO GUIDOTE.

